EAST device is the world's first non-circular cross-section superconducting Tokamak nuclear fusion experimental device, and has developed into an important international cooperation experimental platform. In order to expand and facilitate the cooperation unit to participate in the experiment, the development of EAST remote plasma control system is proposed, the system uses Web development model, functioning to provide remote customers with access to experimental data, real-time control services, and discharge program settings services. The portal system design is mainly responsible for authentication and authorization, request format inspection and technical data check, and other security features. Authentication and authorization phase use three-stage verification, the main technology includes VPN, digital certificates, random verification code, and other network security technology. Request format check and technical data check use modular technology, for different discharge program, a separate module is written to ensure system scalability.